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How United States ranks worldwide on dormant space, the transfer market, routing security and address density.
PeeringDB-registered presence.
APNIC-measured end-user deployment.
Clean prefixes (valid RPKI + IRR, no mismatch).
Cumulative IPv4, IPv6, and ASN allocations to United States over time.
The largest autonomous systems registered to United States by IPv4 footprint.
| AS | Holder | IPv4 | Prefixes |
|---|---|---|---|
| AS749US | DNIC-AS-00749 - United States Department of Defense (DoD) | 227.7M | 3,139 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 211.2M | 21,186 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,242 |
| AS721US | DNIC-ASBLK-00721-00726 - United States Department of Defense (DoD) |
United States against its land-border neighbours on IPv4, IPv6, AS numbers and per-capita density.
Share of announced address space covered by valid Route Origin Authorizations.
31,994 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 383 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 49.3M | 3,669 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,948 |
| AS701US | UUNET - Verizon Business | 43.6M | 998 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,373 |
| PUEBLO-DE-COCHITI-NSN - Pueblo de Cochiti |
| 256 |
| 65.5K |
| 2 |
| AS401928US | DFTC - DFTC | 256 | 256 | 2 |
| AS36743US | AUSRA-SYSTEMS - Ausra LLC | 256 | 18 | 4 |
| AS1650US | CAMBRIDGEMA-PUBLIC-SCHOOLS - Cambridge Public Schools | 256 | — | 1 |
| AS32450US | TESU-WEB - Thomas Edison State University | 256 | — | 1 |
| AS393693US | EA-BOGOTA - Electronic Arts, Inc. | 256 | — | 1 |
| AS32533US | JMLS - The John Marshall Law School | 256 | — | 1 |
| AS22050US | SDLANCPA - School District of Lancaster | 256 | — | 1 |
| AS29758US | SAMBATV-LAS - Samba TV, Inc. | 256 | — | 1 |
| AS22041US | CED-15-ASN - Comtech EF Data | 256 | — | 1 |
| AS53532US | CINNAMINSON-SCHOOLS - The Board of Education of the Township of Cinnaminson | 256 | — | 1 |
| AS32209US | MOMENTUM-ACCESS-EU - Momentum Telecom, Inc. | 256 | — | 1 |
| AS35957US | IT-IS-WRITTEN - It Is Written, Inc. | 256 | — | 1 |
| AS21764US | CFCU-CORP - Clearview Federal Credit Union | 256 | — | 1 |
| AS53970US | SELMED-1 - Select Medical Corporation | 256 | — | 1 |
| AS397736US | BEACON-FCU - Beacon Federal Credit Union | 256 | 16 | 2 |
| AS18436US | MSPD-ASN - Mohegan Sun Pocono Downs | 256 | — | 1 |
| AS26915US | WERNER-OMA - Werner Enterprises | 256 | — | 1 |
| AS46080US | ORTHOALLIANCE - OrthoAlliance MSO, LLC | 256 | — | 1 |
| AS396325US | FUSION-NETWORKS - Fusion Networks Enterprises LLC, The | 256 | — | 1 |
| AS399749US | AS-RTI-01 - Restaurant Technologies, Inc. | 256 | — | 1 |
| AS54556US | MCCALLIE-SCHOOL - McCallie School | 256 | — | 1 |
| AS210676US | Appline_Group_LLC Appline Group LLC | 256 | — | 1 |
| AS6434US | PIERPONTSECURITIES - Amherst Pierpont Securities | 256 | — | 1 |
| AS402101US | ALLOY-CLOUD - ALLOY, Inc. | 256 | — | 1 |
| AS40167US | SCHIFFRINBARROWAY - Schiffrin & Barroway, LLP | 256 | — | 1 |
| AS29824US | APPFO-SB - Appfolio, Inc. | 256 | — | 1 |
| AS54181US | SJH-BANGOR-AS1 - ST JOSEPH HOSPITAL | 256 | — | 1 |
| AS40137US | AWM-INVESTMENT - AWM Investment Company, Inc. | 256 | — | 1 |
| AS399463US | UCOMTEL-02 - UComtel Inc | 256 | — | 1 |
| AS47059US | YORKHOSPITAL - York Hospital | 256 | — | 1 |
| AS399999US | LYON-BV-01 - LYON COLLEGE | 256 | — | 1 |
| AS400609US | LOOPHOLE-LABS - Loophole Labs, Inc. | 256 | — | 1 |
| AS27558US | FAR-ASN - Florida Assoc of Realtors | 256 | — | 1 |
| AS397001US | CSISD - College Station Independent School District | 256 | — | 1 |
| AS393392US | PNWUPRIMARYPUBLIC - Pacific Northwest University of Health Sciences | 256 | — | 1 |
| AS54705US | FRANKCRUM - FrankCrum | 256 | — | 1 |
| AS13967US | BUYSEASONS - Buyseasons, Inc. | 256 | — | 1 |
| AS22509US | BANFIELD - Banfield | 256 | — | 1 |
| AS13931US | AS-MH001 - MASONIC CHARITY FOUNDATION OF NEW JERSEY | 256 | — | 1 |
| AS394315US | WYNN-EVERETT-MASS - Wynn Resorts Limited | 256 | — | 1 |
| AS395024US | AS-PIKEMEDCENTER - Pikeville Medical Center | 256 | — | 1 |
| AS33435US | CITYOFSPRINGFIELDMA - City of Springfield, Massachusetts | 256 | — | 1 |
| AS402217US | COASTELECTRIC-01 - Coast Electric | 256 | — | 1 |
| AS400073US | VELOCITY-HOLDINGS-LLC - VCT Holdings LLC | 256 | — | 1 |
| AS394062US | COLLEGE-FOUNDATION-INC - College Foundation, Inc. | 256 | — | 1 |
| AS62526US | AXCELIS-TECHNOLOGIES - AXCELIS TECHNOLOGIES | 256 | — | 1 |